I am using the PRISM+ X340 PRO. I choose this because warranty 3 year and in case really need warranty, the most they sent to SG compare to Xiaomi need to send to China. If you think this is new brand and not sure about reliability, how sure are you about Xiaomi monitor? In fact, prism+ founded since 2015 so it has around 6 year of doing monitor.(not saying xiaomi is bad, but if you are like me concern about warranty, maybe can try consider prism+)
I just bought the X340 PRO, so far so good, no dead pixel, I did not adjust much on the setting yet, but I feel the color abit over saturated for me. So far I just use for trading purpose so color not yet an issue but it only been 2 week  after I received the monitor so cant commend much as I haven use it for other purposed. The monitor also got built in crosshair in case you want it for FPS gaming.